Obss
abbr. ocean bottom scanning sonar 海底扫描声呐
🗣️ 情景例句
Three cheers for Ms Li.
给李小姐三声欢呼！
John stopped studying.
约翰停止学业了。
That's the doorbell, said Ann's mother. They're here!
“门铃响了，”安的母亲说。“他们来啦！”